Pulley



1'. P. FOWLER.

' PULLEY.

APPLICATION FILED NOV- 22. 1919.

Patented Jan. 3,1922.

v uu 'rnn STATES JOHN 1?. FOWLER, or LSOMERVI/LLE, MASSACHUSETTS.

r ncense.

I T all whom it may concern PULLEY.

I Be it known that 1, JOHN P. Fownnn, a

, citizen of the United States, residing in Somerville, in the county of. MiddleseX and State of Massachusetts, have invented an Improvement in Pulleys, of which the folaccompanying drawings, is a specification, like characterson the drawings representing like parts. a This invention relates to a'pulley and more particularly to a pulley rim which is supplemental to. and detachable from the main rim of a pulley and has provision for enabling the pulley to be used with anyforinv of belt and especially'round belts made from a coiled wire; Q g

To this end the supplemental rimis made from a sheet metal strip or band, which is capable ofbe-ing .bentqo'r shaped intosubk stantially cylindricalf'orm and is provided at itszends with lugs cr ears which are con-. nected together to form a substantially continuous annular 'band'or rimpand-which is provided between its side edges with projections for forming an annular groove for the reception of a belt whose cross section is materially smaller than the width of the v tion will be pointed out the claims at the the longitudinal'center of the said band or saidrim. Provision is also made for fastening the supplemental pulley rim to a: smooth or unfianged pulley against lateral displacement thereon.

These and other features of this invenend of this specification.

Fig. 1 represents two pulleys embodying the invention connected by a coiled wire belt.

Fig. 2, a side elevation of the pulleys and belt shown in Fig. 1.

Fig. 3, a side elevation of the lower pulley shown in Fig. 1 on an enlarged scale.

Fig. 1, a detail in section on the line 44:, Fig. 3. i

Fig. 5, a plan of the blankfrom which the rim shown in Fig. 3 is formed, and

Fig. 6, a detail of the locking device strip, and with projections 13, 14,,which are struck up out of the band or strip a, between V Specification of Letters lPatent.

arranged in rows on opposite sides of the longitudinal center with theprojectio'ns 13 in one row preferably arranged in staggered relation to the projections ltlIl the other PATENT orr cn.

Patented Jan. 3,1922.

Application filed November 22, 1919. SerialNo. 3 10,0042, v

i the side edges-thereof, said projections being row.- .The end projections 10, 12, are :bent substantially atright angles-to the body por tion' of the band or strip a as represented in Fig. 3, and in thep-resent lnstance are provided 'with holes 15 for the passage of screws 16, with which co-operat'e'nuts 17 to cause the band or strip a to conform closely to the periphery ofthe pulley 18 to which it is applied to form a detachable supplemental rim therefor. The projections 13, 14%, are

preferably inclined from the band or strip l a andco=operate to form a substantially'narrow annular groove for the reception of a belt 20, WlllCll may be o-f any'suitable material and preferably-round in crosssection.

' An inexpensive and'durable belt 20-may be l I made-from coiled wire of the "proper diameterto'fit the groove formed by the projections13,14.

' .The detachable rim a: may :be applied to any smooth hub or pulley and provide the 1 Y same with a rim having a groove for the reception of thebelt.

The detachable rim (4 may alsobe used with a pulley or hub having side flanges 22 as shown in Figs. 1 and 2, or it may be applied to a pulley or hub which is smooth or unflanged as represented in Figs. 1 and '2.

When used with a pulley or hub having side flanges, the rim 0. needs only to be secured to the pulley by the screws 16 and nuts 17, as the side flanges 22 serve to prevent lateral displacement of the rim a. When used on an unflanged pulley orhub, it is preferred to employ a device for locking the rim a to the pulley or hub against lateral displacement. 1 I

In the present instance, one construction of locking device is shown, which consists of a thin metal bar or piece 25 (see Fig. 6), which is provided at its opposite ends with cuts or slits 26 forming three fingers 27.

The metal bar or piece 25 is made of sufii-. cient length to extend across the pulley or hub 18 and have the fingers 27, project'sufiiciently to enable the two outside fingers to be bent into engagement with the outer surface of the rim a and the intermediate finger to The detachable rim a is capable of being applied to. a pulley in a substantially short time, and is especially useful in connection p with thefpulleys of an automobile employed to drive the fan29 thereof. 7

In Fig. 1, I have represented the pulley mounted onthefan shaft 30 as provided with a detachable rim aand connected by an endless belt 20 of coiled wire with the detachapplied toa Ford car in about fifteen minutes.

WVhile. the improved pulley rim is especially useful in connection with the. fan equipment'ofmotor vehicles, it is not desired to'limit the invention in this respect, as it is evident it'canbeused to advantage on various kinds: of machines and in shops as an' emergency or permanent equipment, and further enables a small pulley to be equipped with a larger rim so as to enable a larger belt to be used if desired or vice versa. 7

In the present instance, one embodiment of the invention is shown but it is not deconstruction shown.

Claims. r 1. 'The combination with a' pulley provided with a circular unflanged rim,- of a supplemental rim therefor comprising a metal band or strip encircling said. unflanged rim and prov ded betweenlts s de edges with means for'forming an annular groove for thereceptionof a belt, means for clamping the supplemental rim to the rim of the pulley, and

means for securing the supplemental rim against lateral displacement on the unflanged rim of said pulley. I

prising a sheet metal band or strip provided with struck up projections located between the side edges of said band or strip and forming a groove for the reception of a belt, ears extended from the ends of said band or strip at an angle thereto, and means for connecting saidears. r V

' 3. A supplemental rim for pulleys com- 2. A supplemental rim for pulleys com l sired to limit the invention to the particular prising a sheet metal band or strip provided Withstruck up projections located between the side edges of said band" or strip and forming a groove for the reception of'a belt, said projections being. arranged'in rows extended longitudinally. of said band or strip with the projections in one row in staggered relation to the projections in the other row. In testimonywhereof, I have signed my name to this specificatio r JOHN P. FOWLER. 

